Furnace



3` Sheets-f-Sheet- 1. A. JAY.

FURNAE.

(No Model.)

-im E Patented July 3,1894.

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(No Model.)

A. JAY. PURNAGE.

Patented July s, 1894.

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"III llllh WEEER www?? UNITED STATES PATENT OFFICE.

AARON JAY, OF CHICAGO, ILLINOIS.

FURNACE.

SPECIFICATION forming part 0f Letters Patent N0."522,215, dated July 3, 1894. Application filed December 13, 1893. Serial No. 493,600. (No model.)

To all whom if may concern:

Be it known that I, AARON JAY, a citizen of the United States, yresiding at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Furnaces and Furnace Grates, of which the following is a specification.

The object of my invention is `to produce a furnace in which the combustion is complete and which may be operated easily; also to produce a means by which the ashes may be constantly removed from the pits and chambers of said furnace. I produce these results by the means illustrated in the accompanying drawings, in which- Figure 1 is a vertical section of the furnace showing the boiler in eleva-tion. Fig. 2 is a horizontal section showing the revolving grate and the dump grate in plan. Fig. 3 is avertical cross section showing the means by which the bars of the grate are made t0 revolve. Fig. 4 is a cross section of the grate bar and Fig. 5 is a plan of the same.

Similar letters refer to like parts throughout the Various views.

In the drawings, A, represents the boiler, which may be of any approved pattern. a, represents the furnace of said boiler. The grate of this furnace is made of a set ofrevolving grate bars, C, resting in the walls of the furnace and having on them the cogs, C. On the end of each one of these grate bars, C, is a sprocket wheel, D, shown in Fig. 3,0f the drawings. Over, this sprocket wheel passes the sprocket chain, d, which chain is driven by the sprocket wheel, g, on the shaft, h, which shaft is driven by an engine on the side of the boiler wall as will be more fully explained later on. The sprocket wheels, D, on vthe ends of the grate bars are placed within the furnace wall and are protected from ashes and dirt by the shield, f, which piece is placed close enough to the sprocket wheels to prevent the driving chain from being displaced. By thisarrangement the grate bars are made to revolve slowly but constantly in the direction of the rear of the furnace and thus the fuel is constantly carried yin that direction during its combustion. The grate bars, C, are made hollow as will be seen by reference to Figs. 4 and 5 of the drawings and at short intervals along the grate bar are placed the holes, C", which enable a passage of air through the grate bars and also a more free passage of air through the fuel upon the grate. At the rear of the revolving grate is placed the dump grate, m, which is composed of the grate bars, m, resting upon the rod, n, which rod is supported in the walls 0f the furnace.

. Connected with the grate, m, is the arm or lever, R, and connected with said lever is the rod, fr, having at its outer end the handle, O, which is out in\front of the furnace as is shown in the drawings. By the movement of this rod, the grate may be revolved on the rod, n, and thus dumped which position is shown in dotted lines in Fig. 1 of the drawings. Just over this dump grate is the deflecting arch, S, which throws the unconsumed gases against the incandescent fuel upon the dump grate, m, and thus, with the aid of the white heat to which said deflecting arch will be heated, all gases from the fuel will be fully and completely consumed.

On the front of the furnace is the hopper P by which means the fuel is placed in the furnace. Upon the side of the furnace is placed the engine E, see Fig. 3 of the drawings, which engine drives the shaft, h, by means of the link belt, Z, and the sprocket wheel, t', placed upon said shaft. Upon this shaft is also placed the sprocket wheel, 7c, which drives the cross conveyer, T, by means of a link belt passing between the two. In the back part of the furnace is the shaft, w, driven by a link belt t which connects said shaft with the shaft, h. At the end of the shaft, w, is placed abevel gear, W, by which means the motion is conveyed to the conveyer V. This conveyer carries all dust or ashes that may find their way into the combustion chamber, forward to the front of the furnace, and, besides keeping the combustion free from ashes and soot, it also carries all ashes that may Iind their way into the ash pit, toward the front of the furnace at which place there may be a receptacle into which they drop. The conveyors T carry the ashes from the sides of the ash pit to theV center where they are engaged by the conveyer, V, which carries them out to the front of the furnace. By this means the ashes in the ash pit and combustion chamber are constantly being carried off and said chamber and pit are at all times free from ashes and soot.

Having thus described my invention, what I desire to claim and secure by Letters Patent l. In a furnace, the combination of the chamber adapted to receive the solid products of combustion, the said chamber having its bottom formed of plane surfaces inclined to a central line, the conveyers located in the said base in a line coincident with the line of convergence of the said plane surfaces adapted to carry the said products of combus-` tion to a central point, and the auxiliary con-` veyer leading from the said central point to the exterior of the chamber, substantially as described.

2. In a furnace, the combination of the chamber adapted to receive the solid products of combustion, the main conveyer located in the bottom of the said chamber and lon gitudinally of the same, adapted to convey the solid products of combustion to the exterior of the chamber, and the auxiliary conveyer located on both sides of the main conveyer and transversely of the chamber to carry the solid products of combustion to the said main conveyer, substantially as described.

3. In a furnace, the combination of the grate formed of continuously rotated bars adapted to gradually feed the fuel inwardly, the pit or receptacle formed immediately back of the inner end of the said grate to receive the incandescent fuel, the saidfurnace, grate and receptacle being designed to receive air from beneath the grate and to convey the same together with the gases of combustion to the rear of the combustion chamber over the burning fuel, the detlector mounted immediately above the said pit or receptacle and extending downwardly to Within'a short distance of the upper opening of the pit to throw the gases of combustion u pon the incandes cent fuel contained therein, and the dumping grate mounted in the lower end of the pit or receptacle, substantially as described.

AARON JAY. Witnesses:

E. E. BARKEr-i, LoUIs ROSE. 

